Max kelling



(No Model.)

M, KELLING. I FIRE PROOF DOOR AND CASING. No. 416,266. Patented Dec. 3, 1889.

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WITNESSES E I Win/t 4 qfinhfl PE FE'FERS PhctaI-ilhngnplmr. \Viihinglom-DI O UNITED STATES PATENT OFFICE.

MAX KELLING, on NEW YORK, N. Y.

FIRE-PROOF DOOR AND CASING.

SPECIFICATION forming part of Letters Patent N 0. 416,266, dated December 3, 1889. Application filed June 21, 1889- Serial No. 315,125. (No model.)

To all whom, it may concern.-

Ee it known that I, MAX KELLING, a citizen of Germany, residing at New York, in the county and State of New York, have invented a certain new and useful Improvement in Fire- Proof Doors and Casings, of which the following is a specification.

This invention relates more particularly to self-closing fire-proof doors or windows and casings for elevator-shafts, dumb-waiters, closets, 650.; and it consists in the construction and novel arrangement of parts, as hereinafter specified.

I11 the accompanying drawings, Figure 1 is a front view of a closed door and its casing. Fig. 2 is an edge view showing the casing secured by a brick or other wall. Fig. 3 is a transverse section through the line mm, Fig. 1. Fig. 4 shows a portion of the frameas fastened in a wall, with the front casing removed. Fig. 5 is a detail showing the manner of securing glass or mica in the door, and Fig. 6 is a detail cross-section of one edge of the door.

Similar letters of reference indicate like parts in all the figures of the drawings.

Referring by letter to the drawings, A indicates a door or hinged window. B is the surface or outer casing, and O is the back framing.

All the parts above mentioned are of sheet metal, preferably iron.

The door A may be wholly paneled, as shown in the lower portion of Fig. 1; or it may be provided wholly with the transparent material shown in the upper portion of Fig. 1. The ends and side edges of the door are 1101- low; or, in other words, the door, when designed for glass panels, consists of the hollow side portions a and the hollow end portions a, suitably connected together at the corners. By referring to Fig. 6 it will be seen that these portions a a are formed by bending the sheet metal at substantially right angles in cross-section to form the four walls a a a (F. A portion of the metal forming the wall a is turned outwardly atright angles to form'a tongue at, and the metal forming the wall a is continued outwardly and turned back over the edge of the tongue, as at a thus forming a solid base-flange for the glass or mica D.

It may be desirable to slide lengths or sheets of mica or glass the whole length of the door Within the side and end portions. In this event I provide the integral retaining-strip a which, as here shown, is formed by an out wardly-eXt-cndiug fold or corrugation of the wall a Asheet of glass or mica may be slid in and have its edges retained by the baseflange and the retaining-strip. It is obvious that one of the end portions is secured in place after the glass is slid in place.

Instead of providing the retaining-strip, as above described, the walls a may have secured to their outer surfaces soft-metal strips D, having saw-teeth d, which may be bent over the glass to retain it in a similar manner to putty. over the bent teeth in order to make a better finish or' surface for paint. A center post d may be fitted in the door or sash, and crossbars (I may also be inserted. The front hot the casing B may be stamped in any desired configuration to represent moldings. The outer edges of the casing are turned back, as at W, at substantially right angles to the front I), and a portion 1) is turned at right angles to the portion 19 cover the portion 11 and abut against the portion 19 The inner edge of the metal is turned back and outward to form the jamb Z) for the door, and from this joint the metal is continued to form the back framing O, which has an angle portion 0. It will be seen in Fig. 3 that the brick forming the wall is built in the angle formed by the portion 0, thus locking the whole frame and casing within the opening. A cast metal molding O is preferably secured to the lower-portion of the casing, as a lighter material at this point would be dented or otherwise damaged.

- O is a separate strip of metal placed on the top of the framing O. This strip C is arched in its central portion, and is designed as a base upon which to form the brick arch above the framing. This arch-stripC may be temporarily held in place by inserting its ends under bent-over ends of the top casing.

The door is hung on ordinary hinges, and I desire it to be self-closing, so that there will be no danger of its standing open and creating a current of air in case of fire. For this purpose I provide a spring E, which is suitably inclosed by boxing e on the inner surface of one side of the framing. A wire or chain In fact, putty may be also applied The plaster of a wall will c is extended from the spring through an opening in the casing and is connected pivotally with the hinged edge of the door. When the door is opened, the spring will be contracted, so that when the door is released it will be closed by the expansion of the spring.

As before stated, this door and its casing are made of sheet metal. I prefer sheet metal, for the reason that it will not be aitected by by the action of heat. Cast metal would crack or bend under the influence of heat. 1 also prefer mica for the transparent parts of the door, as it is not destroyed by heat.

Having described my invention, what I claim is- 1. In combination with a sheet-metal door, a sheet-metal casing and framing adapted to be secured in awall, the said framing being integral with the casing and having the angle portion, substantially as specified.

.9. In combination with a metal door, asheetmetal casing therefor having the turned portion U and the right-angled portion and a sheet-metal framingintegral with the casing, substantially as specified.

2.). In combination with a door and a sheet metal framing, an arched metal strip removbly secured to the framing by having its ends engaging under bent ends of the fran'iing, substantially specified.

:1. A metal door having its hollow side and end portions formed of sheet metal bent in rectangular form and having the integral baseflange and integral retaining-strip for glass, substantially as specified.

In combination with a sheet-metal door substantially such as described, a retainingstrip for glass, comprising a soft-metal strip having saw or analogous teeth, substantially as specified.

0. The combination, with a sheet-metal easing and frame and a tire-proof: door, of a spring ineloscd in the framing, and a wire or chain connecting with the spring and hinged edge of the door, substantially as specified.

MAX KEIILING. Witnesses:

It. ScHMIoT, JOHN W. RAPP. 

